Preheat oven to 375F (190C).,Lightly grease a baking sheet.,In a saucepan melt chocolate over low heat.,Let cool.,In a small bowl mix flour, baking powder and salt.,In a medium bowl beat margarine and sugar until creamy.,Stir in egg, vanilla and chocolate.,______,To make spiders, shape a 2 inch; flat oval for the body.,Make the spiders head by flattening a circle about 1/2 inch wide.,Shape dough for 8 legs, each 2 inches long and less than 1/4 inch wide.,Attach the head and legs to the body.,Use red candies for the eyes.,Bake in 375F (190C) oven for 5 to 8 minutes.,Let spiders cool on baking sheet to avoid breaking when removing.